Abstract
Dynamic load modulation is proposed to improve the efficiency of an RF power amplifier with discrete supply modulation. A 47.5 dBm, 2.7 GHz power amplifier is realized to show the potential of the method. The amplifier design is based on continuous wave load-pull measurements to determine the optimum load impedances, using the statistics of a 10.2 dB PAPR OFDM signal. The output network contains a single SiC varactor for adaptive output matching. The supply voltage is adjusted by a 2-level supply modulator. Static evaluation of the amplifier shows an improvement in PAE of approximately 9.7 percentage points at 10 dB back-off due to load modulation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
